Agricultural Experiment Station of Porto Rico; Its Establisment, Location, and PurposeFrank D. Gardner · First published 2018Open the Tome
Traditional American Farming Techniques, Second Edition (Traditional)Frank D. Gardner · First published 2007Open the Tome
Successful farming; a ready reference on all phases of agriculture for farmers of the United States and CanadaFrank D. Gardner · First published 1916Open the Tome
Manurial requirements of the Cecil silt loam of Lancaster County, S.CFrank D. Gardner · First published 1905Open the Tome
Manurial requirements of the Leonardtown loam soil of St. Mary County, MdFrank D. Gardner · First published 1905Open the Tome
Manurial requirements of the Portsmouth sandy loam of the Darlington area, South CarolinaFrank D. Gardner · First published 1905Open the Tome